All batches do their own pipeline compare

src/gpu/GrDefaultPathRenderer.cpp

Index: src/gpu/GrDefaultPathRenderer.cpp
diff --git a/src/gpu/GrDefaultPathRenderer.cpp b/src/gpu/GrDefaultPathRenderer.cpp
index e02e082b56a71627080d9d81b418b2c899700784..77af9e9856511d2ab804b5778f8cffa4b7d3489e 100644
--- a/src/gpu/GrDefaultPathRenderer.cpp
+++ b/src/gpu/GrDefaultPathRenderer.cpp
@@ -384,6 +384,10 @@ private:
     }
 
     bool onCombineIfPossible(GrBatch* t) override {
+        if (!this->pipeline()->isEqual(*t->pipeline())) {
+            return false;
+        }
+
         DefaultPathBatch* that = t->cast<DefaultPathBatch>();
 
         if (this->color() != that->color()) {